Multiple fault diagnosis in printed circuit boards
S.J. Barnfield, Will R. Moore · 2002
This paper addresses the problems of diagnosing multiple faults occuring in the non-boundary-scan parts of a printed circuit board. The paper details a diagnostic algorithm based upon combining the fault signatures of single faults in order to produce a pattern which best matches the signature of a multiple fault. In addition, a graphical routine is presented which allows the tester to analyze a given set of test vectors. This analysis provides an implicit fault-simulation process for stuck-at and bridging faults. Furthermore, the process informs the tester of any faults which mask other previously detectable faults within the given test set.>